Wendy,

I'm in agreement with all. The wording, as such, implies the PTH wall. 
This is the way I've interpreted it for 3/A programs.

Regards,

Gary


On 8/17/2010 5:07 PM, Wendi Boger wrote:
> I need some clarification on the requirement for Plating/Coating
> Thickness.  The 3/A page requires additional copper thickness above
> class 3 to be added to tables 3-3, 3-4 and 3-5.  Does this also apply to
> the minimum wrap thickness?  (Example) Is it required for a
> non-conductive filled through via to have .944 mils of wrap (table 3-3)?
> It's a bit confusing as it says to apply to minimum copper average and
> minimum thin areas.
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> Wendi
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